PhpMyAdmin table gives empty column

I am working on a project to send sensor data to phpmyadmin table using GET request.

I am not able to see sensor data in the table when I consider my Arduino to be the client, but when I use this URL on my Google chrome browser it shows the result (ex. 40).
It seems the problem is with the Arduino code.

Serial.println("\nStarting connection to server...");
// if you get a connection, report back via serial:
if (client.connect(server, 80)) {
Serial.println("connected to server");
// Make a HTTP request:
client.println("GET /add.php?");
client.print("Steinhart=");
client.print(Steinhart);
}

// if there are incoming bytes available
// from the server, read them and print them:
while (client.available()) {
char c = client.read();
Serial.write(c);
}
}

// attempt to connect to Wifi network:
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
status = WiFi.begin(ssid);